MODULE 3

• Software services


  • word processors
  • Internet browsers
  • email clients
  • chat clients
• Platform services


  Provide a platform for developers to code, build and manage software applications
• Communication Services


  Enable employees in a company to talk to one another
• Security Services


  Add a layer of security protection to our IT infrastructure
• User Productivity Services


  Software development programs, word processing, graphical editors, finance software
• Instant communication


  Drastically changed how we communicate in both our personal and professional lives
• Chat applications


  • Facebook Messenger
  • Internet Channel Relay or IRC
• IRC


  A protocol that's used for chat messages, operating in a client and server model
• XMPP


  An open source protocol used in instant messaging applications and social networking services, also used in Internet of Things applications
• XMPP applications

  • Pidgin
  • Padium
• Email services for a company


  Setting up a domain name for the company's email, like [e-mail]
• Ways to set up email for a company


  • Run your own managed server
  • Use an email service provider, like Google Suite
• Post Office Protocol 3


  • downloads email from an email server onto your local device, deleting the email from the server
• Internet Message Access Protocol


  • keeps your messages on the email server
• Simple Message Transfer Protocol


  • the email protocol for sending email
• Software licenses


  • When software is used as a consumer, agreements can say that only a specific person can use the software
  • In a business or commercial setting, most software distributors will have a separate agreement
• Hypertext Transfer Protocol Secure

  • the secure version of HTTP that ensures communication between a web browser and website is encrypted
• Transport Layer Security protocol - the most popular way to keep communications secure over a network
• Secure Socket Layer protocol - an older and insecure way of securing communication between a web server and client, deprecated in favor of TLS
• Certificate authority


  Grants a certificate to a website saying that it trusts the website and verifies the website's identity
• File storage services


  Allow us to centrally store files and manage access between files and groups
• Ways to maintain file storage services

  • Set up a file storage server
  • Use a Cloud file storage provider
• FAT32


  A popular FAT file system that's compatible with Windows, Linux, and Mac OSes
• Network file system

  • a protocol that enables files to be shared over a network, easiest to set up on a Linux environment
• SMB


  A protocol that Samba implements
• Mobile synchronization


  Ensuring that important data on a mobile device, like emails, photos, videos, calendars, health data, and location data, is synchronized or synced with another location
• Print services


  Centrally managing all printers in an IT infrastructure by installing a print service on a server
• Web server


  Stores and serves content to clients through the Internet, running an HTTP service or HTTP server that processes HTTP requests
• Database server


  Consists of database software that allows reading and writing from databases, like MySQL and PostgreSQL, often using solid state drives (SSDs) for increased performance
• Software as a Service

  The software is already pre-configured and the user isn't deeply involved in the cloud configuration
• Infrastructure as a Service

  You're hosting your own services in the cloud, needing to decide how you want the infrastructure to look depending on what you want to run on it
• A region is a geographical location containing a number of data centers, each called a zone, which are independent of each other for redundancy
• Cloud deployment models

  • Public cloud
  • Private cloud
  • Hybrid cloud
• "A" record is used for hostnames
• Open IM protocols that are widely used and integrated

  into different communication applications.
• XMPP - Extensible Messaging and Presence Protocol
• Communication Services

  • enable employees in a company to talk to one another
• Security Services

  • add a layer of security protection to our IT infrastructure.
• SSL version 3.0

  • essentially TLS version 1.0
• Security Services

  • Security is super important to all organizations. It's integrated into all aspects of an IT infrastructure service.

  • keeping data encrypted, authentication, etc.